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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1111/nph.13534
|2 doi
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|a pubmed25n0834.xml
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|a DE-627
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|e rakwb
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|a eng
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|a Cna'ani, Alon
|e verfasserin
|4 aut
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|a Two showy traits, scent emission and pigmentation, are finely coregulated by the MYB transcription factor PH4 in petunia flowers
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|c 2015
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 15.08.2016
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2015 The Authors. New Phytologist © 2015 New Phytologist Trust.
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|a The mechanism underlying the emission of phenylpropanoid volatiles is poorly understood. Here, we reveal the involvement of PH4, a petunia MYB-R2R3 transcription factor previously studied for its role in vacuolar acidification, in floral volatile emission. We used the virus-induced gene silencing (VIGS) approach to knock down PH4 expression in petunia, measured volatile emission and internal pool sizes by GC-MS, and analyzed transcript abundances of scent-related phenylpropanoid genes in flowers. Silencing of PH4 resulted in a marked decrease in floral phenylpropanoid volatile emission, with a concurrent increase in internal pool levels. Expression of scent-related phenylpropanoid genes was not affected. To identify putative scent-related targets of PH4, we silenced PH5, a tonoplast-localized H(+) -ATPase that maintains vacuolar pH homeostasis. Suppression of PH5 did not yield the reduced-emission phenotype, suggesting that PH4 does not operate in the context of floral scent through regulation of vacuolar pH. We conclude that PH4 is a key floral regulator that integrates volatile production and emission processes and interconnects two essential floral traits - color and scent
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a MYB
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|a emission
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|a floral scent
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|a pH
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|a petunia
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|a phenylpropanoid
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|a volatile
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|a Plant Proteins
|2 NLM
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|a Transcription Factors
|2 NLM
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|a Volatile Organic Compounds
|2 NLM
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|a Spitzer-Rimon, Ben
|e verfasserin
|4 aut
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|a Ravid, Jasmin
|e verfasserin
|4 aut
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| 700 |
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|a Farhi, Moran
|e verfasserin
|4 aut
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| 700 |
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|a Masci, Tania
|e verfasserin
|4 aut
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|a Aravena-Calvo, Javiera
|e verfasserin
|4 aut
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|a Ovadis, Marianna
|e verfasserin
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|a Vainstein, Alexander
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 208(2015), 3 vom: 23. Nov., Seite 708-14
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnas
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| 773 |
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|g volume:208
|g year:2015
|g number:3
|g day:23
|g month:11
|g pages:708-14
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|u http://dx.doi.org/10.1111/nph.13534
|3 Volltext
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